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10/11/2006 IASI : Current profiles 1 Purpose èFollowing the SVM shunt11 anomaly, ASTRIUM EF requests the instrument current behaviour, for what concerns the ripples èTwo approaches were undertaken for IASI instrument : ÔRetrieve the measurements obtained during instrument testing (vacuum test) ÔSimulate what are the profiles of the ATC and decontamination lines based on the acquired data over the orbit

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10/11/2006 IASI : Current profiles 3 Simulation of the profiles (1/2) èMathematical models were developed in order to simulate the current for each ATC and Decontamination lines taking into account the voltage, PWM values over one orbit (10 sets) for the Decontamination mode (04/11/2006) èFor example : Decontamination